Probably John Wark if we broaden the scope and consider the 1980s First Division (wouldn't mind being corrected if I'm wrong in regard to this benchmark btw). 36 goals in all competitions as a nominal midfielder sandwiched between Mühren and Thijssen for Ipswich in 1980—81, when they won the UEFA Cup and finished 2nd in the League under Robson — with Wark being adjudged PFA Players' Player of the Year + European Young Player Of The Year and top-scoring in the UEFA Cup with 14 goals (a tally that is surpassed by only Klinsmann and Falcao in the ensuing period). Much like Lampard, he had perfected the art of
arriving in or around the opposition's 18-yard box at just the right time, and incidentally, he was a trophyless Liverpool's goalscorer-in-chief in 1984—85 with 27 (i.e. exactly as many as Lampard in 2009—10 and Bruno this term).
Tim's ITFC Player A-Z | John Wark.
P.S. Funnily enough (since this is a ‟Penandes” thread), Wark was also the first player to score a hat-trick of penalties in a UEFA club competition, with
three of his four goals vs. Aris Thessaloniki in the opening round of the 1980—81 UEFA Cup coming from the spot.